Highlights include:

- [Messages from EMS President Volker Mehrmann and Magazine Editor-in-Chief Fernando P. da Costa (link)](https://euromathsoc.org/magazine/articles/81), focussing on the Russian invasion of Ukraine, and the society's (and magazine's) response.

- [Statistical tools for anomaly detection as a part of predictive maintenance in the mining industry (link)](https://euromathsoc.org/magazine/articles/66) by Agnieszka Wyłomańska (Wrocław), describing new progress in the problem of local damage detection based on vibration signals analysis.

- [A Diophantine equation concerning epimoric ratios (link)](https://euromathsoc.org/magazine/articles/84) by Preda Mihăilescu (Göttingen) and Daniel Muzzulini (Zurich University of the Arts), containing the solution to an interesting equation that is born from classical questions of music theory considered by Ptolemy. 

- [The Newton Project (link)](https://euromathsoc.org/magazine/articles/67) by Scott Mandelbrote (Cambridge), describing ongoing efforts to archive, digitise, and catalogue Isaac Newton's entire body of work.

- [Sir David Cox: A wise and noble statistician (1924–2022)](https://euromathsoc.org/magazine/articles/86) by Christos P. Kitsos (West Attica). Remembering the great statistician who died earlier this year.

There is plenty more of excellent and thought-provoking content too, so please [click through to browse](https://euromathsoc.org/magazine/issues/124)!


Cover Mag Issue 124

EMS Magazine No.124

The EMS/WiM Day event consists of scientific talks (at the level of a Colloquium talk) by two distinguished speakers. Joining instructions are below.

**Schedule**

14:45 CEST      Welcome

15:00 CEST      Tara Brendle (Glasgow University, UK)

16:00 CEST      Tere M. Seara (UPC, Barcelona, Spain)

----------------------------------------------------------------------------------

**TITLES AND ABSTRACTS**

**Speaker:** Tara Brendle (Glasgow University, UK)

**Title:** Symmetries of manifolds

**Abstract:** Riemann introduced manifolds in the mid-19th century as a mechanism for understanding n-dimensional space.  Landmark achievements in mathematics since then include the classification of 2-manifolds in the early 20th century as well as the more recent (though more complicated) classification of 3-manifolds completed by Perelman.  However, the story does not end with classification: there is a rich theory of symmetries of manifolds, encoded in their mapping class groups. In this talk we will explore some aspects of mapping class groups in dimensions 2 and 3, with a focus on  illustrative examples.

**Speaker:** Tere M. Seara (UPC, Barcelona, Spain)

**Title:** Arnold diffusion: an overview and recent results

**Abstract:** In this talk I will talk about the phenomenon known as Arnold diffusion. Equivalently we will show the mechanism that creates big effects after applying arbitrarily small forces for a sufficiently large time. In the language of Hamiltonian Systems, we will consider small periodic in time perturbations of an integrable system. It is known that the energy is preserved in an integrable system, as well as other quantities known as actions. We will show that an arbitrarily small perturbation can create big increments in the energy (and in the actions) and we will explore the dynamic mechanism that is behind this phenomenon.

________

**Joining Instructions**

Any interested person may attend virtually [at this zoom link](https://videoconf-colibri.zoom.us/j/84640950186?pwd=VFZHSitFTVZxNHc2ckE2Y2pHK0NoUT09).

The passcode is 216273


**Alternative instructions:**
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Or Telephone:
     Dial(for higher quality, dial a number based on your current location):
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Webinar ID: 846 4095 0186
     International numbers available: https://videoconf-colibri.zoom.us/u/kcUz2wswQk

Or an H.323/SIP room system:
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     Meeting ID: 846 4095 0186
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     Passcode: 216273

___

Posted on behalf of the EMS WiM committee: Shiri Artstein, Alessandra Celletti, Maria del Mar Gonzalez, Mikaela Iacobelli, Stanislava Kanas, Marjeta Kramar Fijavz, Isabel Labouriau, Pablo Mira, Jiří Rákosník, Elena Resmerita, Anne Taormina.

Wi M Day

EMS/WiM Day - 20 May 2022

Web Large 220321 Sullivan Dennis 050 Copy

Dennis Sullivan is the 2022 Abel Prizewinner

EMS Digest, Nr 42

The EMS was founded in 1990 in Madralin near Warsaw (Poland). This celebratory event was originally planned for October 2020, but postponed due to the pandemic.

The list of contributors can be found [on the event's webpage (link).](https://www.icms.org.uk/events/2022/european-mathematical-society-30th-anniversary-meeting)

This will be a hybrid event, with both in person and online participation possible. Registration for both types of particiaption is now open at the [on the event's webpage (link).](https://www.icms.org.uk/events/2022/european-mathematical-society-30th-anniversary-meeting)



0001

European Mathematical Society 30th Anniversary Celebration

George Lusztig 1

George Lusztig wins the 2022 Wolf Prize in Mathematics

The European Mathematical Society (EMS) supports the European Union’s consistent action against Russia's attack on Ukraine, which is in violation of international law. The EMS regards the Russian invasion as an attack on the fundamental values of freedom, democracy and self-determination, which in turn provide the basis for academic freedom and opportunities for academic cooperation. We are in strong solidarity with the people of Ukraine and our mathematical colleagues.

Although we believe strongly in international scientific cooperation, at this stage we recommend that academic cooperation with state institutions and business enterprises in Russia are frozen and no new cooperations should be initiated at the present time. The EMS  is aware of the consequences of these measures and at the same time deeply regrets them for science. In this direction our solidarity also goes to our long-standing Russian partners and scholars who are themselves horrified at Russia’s invasion of Ukraine.


Statement: European Mathematical Society solidarity with partners in Ukraine – consequences for the mathematical community


___

Mathematicians against war

President of the Russian Federation

V. V. Putin

Mr. President!

We, mathematicians working in the Russian Federation, strongly protest against the military invasion of the territory of Ukraine launched by the Russian army on February 24, 2022.

The standard of living in a country and its position in the world are largely determined by the level of its science. Scientists around the world are working on problems that have no national and territorial restrictions, for the well-being of all mankind; international cooperation, lack of borders for the dissemination of knowledge and humanistic values are the foundation on which science is built. Our long-standing efforts to strengthen the reputation of Russia as a leading mathematical centre have been completely devalued in consequence of unprovoked military aggression initiated by our country.

Mathematics has always been one of the few areas of fundamental science in which Russia has maintained a leading world position. As confirmation of this, Russia was supposed to host the most prestigious mathematical conference in the world, the International Congress of Mathematicians, in the summer of 2022. The International Mathematical Union cancelled this decision in connection with the Russian attack on Ukraine. In a situation where our country has become a military aggressor and, as a result, a rogue state, Russia's leading positions in world mathematics will be irretrievably lost.

In the orders of the President of December 4, 2020, mathematics was named a priority area for the development of the Russian Federation; goals were identified both in the field of fundamental science and in education. These goals, of course, cannot be achieved in the current conditions, when the lives of our closest colleagues – scientists in Ukraine, with whom we have been connected by many years of successful joint work, are daily exposed to danger, the source of which is the Russian army, and when Russia has found itself in international isolation, without the possibility of intensive scientific exchange and cooperation with scientists from other countries.

We are convinced that no geopolitical interests can justify casualties and bloodshed. War will only make the country lose its future, for which we work.

We demand an immediate cessation of military actions and the withdrawal of Russian troops from the territory of Ukraine.

___

Translated from [here (link)](https://trv-science.ru/2022/02/mathematicians-against-war/), the webpage of the Russian scientific publication, *Troitsky Variant*. The original text follows.
___

Президенту Российской Федерации

В. В. Путину

Господин президент!

Мы, учёные-математики, работающие в Российской Федерации, выражаем решительный протест против военного вторжения на территорию Украины, начатого российской армией 24 февраля 2022 года.

Уровень жизни в стране и её положение в мире во многом определяются уровнем её науки. Ученые всего мира работают над задачами, не имеющими национальных и территориальных ограничений, ради благополучия всего человечества; международное сотрудничество, отсутствие границ для распространения знаний и гуманистические ценности — основа, на которой строится наука. Наши многолетние усилия по укреплению репутации России как ведущего математического центра полностью обесценены в результате неcпровоцированной военной агрессии, инициатором которой выступила наша страна.

Математика всегда была одной из немногих областей фундаментальной науки, в которых Россия сохраняла ведущие мировые позиции. Как подтверждение этого, Россия должна была принять летом 2022 года самую престижную математическую конференцию в мире — Международный конгресс математиков. Международный математический союз отменил это решение в связи с нападением России на Украину. В ситуации, когда наша страна стала военным агрессором и, как следствие, страной-изгоем, лидерские позиции России в мировой математике будут безвозвратно утрачены.

В поручениях Президента от 4 декабря 2020 года математика была названа приоритетным направлением развития Российской Федерации; были обозначены цели как в области фундаментальной науки, так и в образовании. Эти цели, безусловно, не могут быть достигнуты в текущих условиях, когда жизни наших ближайших коллег — ученых в Украине, с которыми нас связывают многие годы успешной совместной работы, ежедневно подвергаются опасности, источником которой является российская армия, а Россия оказалась в международной изоляции, без возможности интенсивного научного обмена и кооперации с учёными из других стран.

Мы убеждены, что никакие геополитические интересы не могут служить оправданием жертв и кровопролития. Война приведёт лишь к утрате страной её будущего, ради которого мы работаем.

Мы требуем немедленного прекращения боевых действий и вывода российских войск с территории Украины.


___

Text taken from [here (link)](https://trv-science.ru/2022/02/mathematicians-against-war/), the webpage of the Russian scientific publication, *Troitsky Variant*.

Open letter from Russian mathematicians against the war in Ukraine

Note that that issue was published before the recent decision to change ICM 2022 into a purely online event, as discussed [here (link)](https://euromathsoc.org/news/statement-of-the-executive-board-of-the-european-mathematical-society-on-icm-2022-in-russia-54).

Highlights include:

- A [new year message (link)](https://euromathsoc.org/magazine/articles/mag-63) from EMS President Volker Mehrmann, a message from the EMS Executive Committee, and a message regarding predatory publishing practices.

- Jochen Glück on [Evolution equations with eventually positive solutions (link).](https://euromathsoc.org/magazine/issues/123) "This eventual positivity phenomenon has recently been discovered for various classes of differential equations, but so far a general theory to explain this type of behaviour exists only under additional spectral assumptions."

- Jean-Paul Allouche writes about [T. Tao and the Syracuse conjecture (link)](https://euromathsoc.org/magazine/articles/mag-64). Also known as Collatz's conjecture and the *3x+1* conjecture, this notorious mathematical problem needs no introduction, but has seen some recent progress by Terence Tao. (The EMS thanks _La Gazette des Mathématiciens_ for permission to publish this English translation of an [article from April 2021 (link)](https://smf.emath.fr/publications/la-gazette-des-mathematiciens-168-avril-2021). The author thanks Miriam Gellrich Pedra and Jean-Bernard Bru for their translation.)

- José Francisco Rodrigues discusses [Portuguese mathematical typography: A brief overview from 1496 until 1987 (link)](https://euromathsoc.org/magazine/articles/mag-68). The article follows a recent exihibition in Leiria (Portugal), and contains many fascinating photographs of historical documents.

- Tsou Sheung Tsun [remembers Andreas Griewank (link)](https://euromathsoc.org/magazine/articles/mag-69), a long-term and valued member of the EMS' s Committee for Developing Countries, who died unexpectedly last September, and is much missed.

- Eugenie Hunsicker reports from [the online panel on Gender Balance in Mathematics (link)](https://euromathsoc.org/magazine/articles/mag-71) which took place on 22 June, 2021 as part of the European Congress. 

There is much more besides, so please [click through (link)](https://euromathsoc.org/magazine/issues/123) and have a read!


EMS Magazine No. 123

UPDATE (26/2/2022): The International Mathematical Union has announced that the International Congress of Mathematicians July 2022 will be held fully (and freely) online, instead of in Russia. Full statement [from the IMU at this link](https://www.mathunion.org/fileadmin/IMU/ICM2022/ICM_2022_statement.pdf).

The EMS is an affiliate member of the IMU, and the EMS Executive Commitee welcomes this decision.

News

EMS Magazine No.124

EMS/WiM Day - 20 May 2022

Dennis Sullivan is the 2022 Abel Prizewinner

EMS Digest, Nr 42

European Mathematical Society

EMS Press

Partners of the EMS